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    STUDIA BIOLOGIA - Issue no. 2 / 2001  
         
  Article:   DISTRIBUTION OF 137CESIUM IN EXPERIMENTALLY CONTAMINATED CELLS OF THE LICHEN PELTIGERA MEMBRANACEA.

Authors:  KATALIN BARTÓK, IOSIF CHEREJI, ANA NICOARĂ, MARINELA SIMIHĂIAN. 		 
       
         
  Abstract:  For studying intra- and extracellular locations of 137Cs, discs were cut from thalli of Peltigera membranacea, sampled in an unpolluted deciduous forest near Bristol, England and contaminated with 137CsCl in a laboratory experiment. The method of sequential elution was used and it was found that the 137Cs taken up by the lichen discs was located to a larger extent intracellularly than extracellularly. Nickel(II) chloride was a more efficient eluting agent than were strontium and cesium chlorides.  
         
     
         
         
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